Microsoft Windows up to Server 2019 splwow64 privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Windows and classified as critical. This vulnerability affects unknown code of the component splwow64. Such manipulation leads to an unknown weakness. This vulnerability is traded as CVE-2021-1648. An attack has to be approached locally. Furthermore, there is an exploit available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Windows (Operating System). Affected by this issue is an unknown code of the component splwow64. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability.

The weakness was shared 01/12/2021 as confirmed security guidance (Website). The advisory is available at portal.msrc.microsoft.com. This vulnerability is handled as CVE-2021-1648. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

A public exploit has been developed by Bryan Alexander and been published 3 months after the advisory. The exploit is available at dronesec.pw. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

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Productinfo

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Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 7.8
Vendor Vector (Microsoft): 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Bryan Alexander
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

12/02/2020 🔍
01/12/2021 +41 days 🔍
01/12/2021 +0 days 🔍
01/13/2021 +0 days 🔍
03/10/2021 +55 days 🔍
10/09/2024 +1308 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed

CVE: CVE-2021-1648 (🔍)
GCVE (CVE): GCVE-0-2021-1648
GCVE (VulDB): GCVE-100-167654
scip Labs: https://www.scip.ch/en/?labs.20161215

Entryinfo

Created: 01/13/2021 09:13
Updated: 10/09/2024 00:38
Changes: 01/13/2021 09:13 (9), 01/13/2021 09:14 (25), 01/13/2021 09:21 (20), 02/11/2021 22:46 (2), 02/11/2021 22:50 (18), 04/28/2021 06:19 (6), 10/09/2024 00:38 (25)
Complete: 🔍
Committer: misc
Cache ID: 216::103

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